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Equus (Dolichohippus) simplicidens Cope 1892 (horse)

Osteichthyes - Perissodactyla - Equidae

PaleoDB taxon number: 104795

Alternative combinations: Equus (Plesippus) simplicidens, Equus simplicidens, Hippotigris simplicidens, Plesippus simplicidens, Pliohippus simplicidens

Synonyms: Amerhippus occidentalis Leidy 1865 (no. 43973), Asinus cumminsii Cope 1893 (no. 44363), Asinus pons Quinn 1958 (no. 44366), Equus (Hemionus) tau Owen 1869 (no. 104805), Equus achates Hay and Cook 1930 (no. 46253), Equus cumminsi Cope 1893 (no. 333501), Equus cumminsii Cope 1893 (no. 46264), Equus littoralis Hay 1913 (no. 46284), Equus occidentalis Leidy 1865 (no. 46294), Equus pons Quinn 1958 (no. 46301), Equus shoshonensis Gidley 1930 (no. 46307), Equus tau Owen 1869 (no. 46309), Hippotigris shoshonensis Gidley 1930 (no. 331467), Merychippus cumminsii Cope 1893 (no. 48176), Onager littoralis Hay 1913 (no. 49330), Plesippus cumminsii Cope 1893 (no. 50473), Plesippus shoshonensis Gidley 1930 (no. 50478), Pliohippus cumminsii Cope 1893 (no. 50532), Protohippus cumminsii Cope 1893 (no. 51011)

Full reference: E. D. Cope. 1892. A contribution to the vertebrate paleontology of Texas. Proceedings of the American Philosophical Society 30(137):123-131

Belongs to Equus (Dolichohippus) according to B. J. MacFadden 1998

Sister taxa: Equus (Dolichohippus) enormis, Equus (Dolichohippus) grevyi

Type specimens:

  • Equus (Dolichohippus) simplicidens: TMM 40282-6, a tooth (left M1)
  • Asinus cumminsii:
  • Equus achates: DMNS 1085, a tooth (isolated upper M2).
  • Equus littoralis:
  • Equus occidentalis:
  • Equus pons: U.A. no. 9, a maxilla. Its type locality is Comosi Wash, which is in a Blancan terrestrial horizon in Arizona.
  • Equus shoshonensis: USNM 11986, a partial skeleton. Its type locality is Hagerman (Gidley Horse Quarry), which is in a Blancan terrestrial horizon in the Glenns Ferry Formation of Idaho.
  • Equus tau:

Ecology: scansorial insectivore

Average measurements (in mm): P3 31.1 x 29.4, P4 29.5 x 28.9, M1 26.6 x 28.2, p3 29.8 x 16.9, p4 29.9 x 15.7, m1 26.0 x 17.6